1 /****************************************************************************
2  ****************************************************************************
3  ***
4  ***   This header was automatically generated from a Linux kernel header
5  ***   of the same name, to make information necessary for userspace to
6  ***   call into the kernel available to libc.  It contains only constants,
7  ***   structures, and macros generated from the original header, and thus,
8  ***   contains no copyrightable information.
9  ***
10  ***   To edit the content of this header, modify the corresponding
11  ***   source file (e.g. under external/kernel-headers/original/) then
12  ***   run bionic/libc/kernel/tools/update_all.py
13  ***
14  ***   Any manual change here will be lost the next time this script will
15  ***   be run. You've been warned!
16  ***
17  ****************************************************************************
18  ****************************************************************************/
19 #ifndef _UAPI__LINUX_BTF_H__
20 #define _UAPI__LINUX_BTF_H__
21 #include <linux/types.h>
22 #define BTF_MAGIC 0xeB9F
23 #define BTF_VERSION 1
24 struct btf_header {
25   __u16 magic;
26   __u8 version;
27   __u8 flags;
28   __u32 hdr_len;
29   __u32 type_off;
30   __u32 type_len;
31   __u32 str_off;
32   __u32 str_len;
33 };
34 #define BTF_MAX_TYPE 0x000fffff
35 #define BTF_MAX_NAME_OFFSET 0x00ffffff
36 #define BTF_MAX_VLEN 0xffff
37 struct btf_type {
38   __u32 name_off;
39   __u32 info;
40   union {
41     __u32 size;
42     __u32 type;
43   };
44 };
45 #define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f)
46 #define BTF_INFO_VLEN(info) ((info) & 0xffff)
47 #define BTF_INFO_KFLAG(info) ((info) >> 31)
48 #define BTF_KIND_UNKN 0
49 #define BTF_KIND_INT 1
50 #define BTF_KIND_PTR 2
51 #define BTF_KIND_ARRAY 3
52 #define BTF_KIND_STRUCT 4
53 #define BTF_KIND_UNION 5
54 #define BTF_KIND_ENUM 6
55 #define BTF_KIND_FWD 7
56 #define BTF_KIND_TYPEDEF 8
57 #define BTF_KIND_VOLATILE 9
58 #define BTF_KIND_CONST 10
59 #define BTF_KIND_RESTRICT 11
60 #define BTF_KIND_FUNC 12
61 #define BTF_KIND_FUNC_PROTO 13
62 #define BTF_KIND_VAR 14
63 #define BTF_KIND_DATASEC 15
64 #define BTF_KIND_MAX BTF_KIND_DATASEC
65 #define NR_BTF_KINDS (BTF_KIND_MAX + 1)
66 #define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24)
67 #define BTF_INT_OFFSET(VAL) (((VAL) & 0x00ff0000) >> 16)
68 #define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff)
69 #define BTF_INT_SIGNED (1 << 0)
70 #define BTF_INT_CHAR (1 << 1)
71 #define BTF_INT_BOOL (1 << 2)
72 struct btf_enum {
73   __u32 name_off;
74   __s32 val;
75 };
76 struct btf_array {
77   __u32 type;
78   __u32 index_type;
79   __u32 nelems;
80 };
81 struct btf_member {
82   __u32 name_off;
83   __u32 type;
84   __u32 offset;
85 };
86 #define BTF_MEMBER_BITFIELD_SIZE(val) ((val) >> 24)
87 #define BTF_MEMBER_BIT_OFFSET(val) ((val) & 0xffffff)
88 struct btf_param {
89   __u32 name_off;
90   __u32 type;
91 };
92 enum {
93   BTF_VAR_STATIC = 0,
94   BTF_VAR_GLOBAL_ALLOCATED = 1,
95   BTF_VAR_GLOBAL_EXTERN = 2,
96 };
97 enum btf_func_linkage {
98   BTF_FUNC_STATIC = 0,
99   BTF_FUNC_GLOBAL = 1,
100   BTF_FUNC_EXTERN = 2,
101 };
102 struct btf_var {
103   __u32 linkage;
104 };
105 struct btf_var_secinfo {
106   __u32 type;
107   __u32 offset;
108   __u32 size;
109 };
110 #endif
111